创建的索引在重启observer后失效

问题描述

create index创建的索引在下一次重启服务器后会失效，稳定复现

Successfully load /root/code/miniob/etc/observer.ini
Invalid arguments, item_size:0, pool_num:1, item_num_per_pool:128, this->name:./miniob/db/sys/t-t_index.index.
Failed to open index. table=t, index=t_index, file=./miniob/db/sys/t-t_index.index, rc=12:NOMEM
Failed to open table. filename=t.table
Failed to open db: sys. error=12

复现过程

miniob > create table t(i int);
SUCCESS
miniob > insert into t values(1);
SUCCESS
miniob > create index t_index on t(i);
SUCCESS

后重启observer

环境

• 开发环境：miniob最新dockerfile
• 版本：miniob_test，clone后未做任何修改
• 编译参数：cmake .. DDBUG=ON && make -j12

Reproduce the sequence in the issue with the miniob observer, then restart it and inspect the index-loading path that reports item_size:0 for ./miniob/db/sys/t-t_index.index. Trace how the created index is written and reopened; done means the index loads successfully after restart and the database opens without the reported errors.